GfK Chart-Track now outlines the top 20 bestselling full-priced PC games in the U.K. for the week ending May 18th. Football Manager 2013 retains the top spot in a list that has reentries at 18 and 19 but is otherwise a shuffling of the same deck. There's also a budget PC sales list where Farming Simulator 2011 is number one. On the all-platform/all-prices top 40 list Metro: Last Light is the new number one (the game's EU release was the 17th, which may explain why it's not on the PC chart). Here's their write-up of the results:

Deep Silver/Koch Media trade one No1 for another this week with ‘Metro Last Light’ replacing Dead Island: Riptide (-25%) at the top.

The 4A Games developed title is the follow up to 2010 title ‘Metro 2033’ and despite being unable to match the week 1 sales of its predecessor which debuted at No5 back in week 11 2010 it goes straight in at No1. Retailer promotions see EA’s ‘FIFA 13’ (+45%) climb back to No3 ahead of Nintendo’s new 3DS offering ‘Pokémon Mystery Dungeon: Gates to Infinity’. The Pokémon title is the 6th in the Mystery Dungeon franchise and the 3rd best week 1 debut in the series.

Activision slip from No2 to No5 with ‘Call of Duty: Black Ops II’ (-32%) ahead of Square Enix title ‘Tomb Raider’ (-11%) which is down to No6. TellTale Games’ ‘The Walking Dead’ (+28%) improves on its debut week climbing from No9 to No7. ‘Injustice: Gods Among Us’ (-24%) slides to No8 with less than two hundred sales separating it from Ubisoft’s ‘Assassin’s Creed III’ (-6%) at No9. Last week’s No6 ‘Bioshock Infinite’ (-8%) rounds off the Top 10 this week.